ZDI-26-486: (Pwn2Own) Kenwood DNR1007XR tchdr_bytestream_read Out-Of-Bounds Write Code Execution Vulnerability
This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Kenwood DNR1007XR devices. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8. The following CVEs are assigned: CVE-2026-18269.
AI Analysis
Technical Summary
The Kenwood DNR1007XR device contains an out-of-bounds write vulnerability in the tchdr_bytestream_read function due to insufficient validation of user input. This flaw permits physically present attackers to execute arbitrary code with root privileges without requiring authentication. The vulnerability is tracked as CVE-2026-18269 and was assigned a CVSS score of 6.8 by the Zero Day Initiative. Kenwood has issued a firmware update to fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker with physical access to execute arbitrary code as root on the affected device. This can lead to full compromise of the device, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Kenwood has released a firmware update that corrects this vulnerability. Users should apply the official update available at https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html to remediate this issue.
ZDI-26-486: (Pwn2Own) Kenwood DNR1007XR tchdr_bytestream_read Out-Of-Bounds Write Code Execution Vulnerability
Description
This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Kenwood DNR1007XR devices. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8. The following CVEs are assigned: CVE-2026-18269.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Kenwood DNR1007XR device contains an out-of-bounds write vulnerability in the tchdr_bytestream_read function due to insufficient validation of user input. This flaw permits physically present attackers to execute arbitrary code with root privileges without requiring authentication. The vulnerability is tracked as CVE-2026-18269 and was assigned a CVSS score of 6.8 by the Zero Day Initiative. Kenwood has issued a firmware update to fix this vulnerability.
Potential Impact
Successful exploitation allows an attacker with physical access to execute arbitrary code as root on the affected device. This can lead to full compromise of the device, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Kenwood has released a firmware update that corrects this vulnerability. Users should apply the official update available at https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html to remediate this issue.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-486/","fetched":true,"fetchedAt":"2026-07-30T15:55:54.604Z","wordCount":193}
Threat ID: 6a6b74c49c2644c7f84cc1e3
Added to database: 07/30/2026, 15:59:00 UTC
Last enriched: 07/30/2026, 16:03:50 UTC
Last updated: 07/31/2026, 15:39:37 UTC
Views: 12
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